Mass Effect 3 - EA Store Reveals Premise

The EA store has accidentally (?) outed Mass Effect 3, prematurely listing the title, which has since been pulled.  Destructoid got a screen grab and here's the description:

Earth is burning. Striking from beyond known space, a race of terrifying machines have begun their destruction of the human race. As Commander Shepard, an Alliance Marine, your only hope for saving mankind is to rally the civilizations of the galaxy and launch one final mission to take back the Earth.

The cynical view might be this is more viral marketing for their upcoming game reveal.